US7703560B2 - Cutting element with canted interface surface and bit body incorporating the same - Google Patents
Cutting element with canted interface surface and bit body incorporating the same Download PDFInfo
- Publication number
- US7703560B2 US7703560B2 US12/217,706 US21770608A US7703560B2 US 7703560 B2 US7703560 B2 US 7703560B2 US 21770608 A US21770608 A US 21770608A US 7703560 B2 US7703560 B2 US 7703560B2
- Authority
- US
- United States
- Prior art keywords
- hard material
- ultra hard
- material layer
- canted
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 69
- 230000007704 transition Effects 0.000 abstract description 9
- 230000032798 delamination Effects 0.000 description 12
- 230000001965 increasing effect Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000005755 formation reaction Methods 0.000 description 11
- 238000005219 brazing Methods 0.000 description 10
- 238000005553 drilling Methods 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
- E21B10/5735—Interface between the substrate and the cutting element
Definitions
- This invention relates to cutting elements for use in rock bits and more specifically to cutting elements which have a body with a canted cutting face on which is formed an ultra hard material cutting layer.
- a cutting element such as a shear cutter as shown in FIG. 1 , typically has a cylindrical cemented tungsten carbide body 10 .
- the cylindrical body has a cutting face forming the interface 12 .
- An ultra hard material layer 14 is formed over the cutting face.
- the ultra hard material layer is typically polycrystalline diamond or polycrystalline cubic boron nitride.
- the ultra hard material layer typically has a planar or dome-shaped upper surface 16 .
- Shear cutters are generally mounted in preformed openings 22 on a bit body 18 at a rake angle 20 typically in the order of 10°-20° ( FIGS. 2 and 3 ). These openings have rear support walls 23 .
- the cutters are brazed to the rear support walls.
- a 90°-180° portion 24 of the cylindrical body outer surface is brazed to the rear support wall ( FIG. 4 ).
- the brazed portions of the cutter body and rear support wall are sometimes referred to as the critical brazing area.
- the portion of the cutting layer opposite the critical brazing area is subjected to high impact loads which often lead to crack formations on the cutting layer as well as to the delamination of the layer from the cutter body.
- the component 138 of the impact load which is normal to the earth formations is a severe load because it is reacting the weight of the bit body as well as the drill string. A majority of this load is reacted in shear along the interface between the cutting layer and the cutter body. This shear force promotes the delamination of the cutting layer from the cutter body.
- the increase in the thickness of the ultra hard material layer results in a decrease in the length of the cutter body. Consequently, the cutter body surface area available for brazing is reduced leading to an increased occurrence of cutter fall out during drilling. Cutter retention, is therefore, reduced when the ultra hard material layer thickness is increased.
- the present invention provides a cutting element and a method for making the same.
- the inventive cutting element has a cylindrical body being made from a hard material such as tungsten carbide, which has a canted end surface.
- the cutting element or cutter body length therefore, decreases diametrically across the end surface.
- the canted end face of the cutter can be planar, curved both in a convex or concave fashion, may be stepped and may be non-uniform in cross-section.
- An ultra hard material layer such as polycrystalline diamond or polycrystalline cubic boron nitride is formed over the canted surface.
- the upper surface of the ultra hard material layer is typically flat or dome-shaped. As such the thickness of the ultra hard material layer increases diametrically across the cutter end face.
- One or multiple transition layers may be incorporated between the ultra hard material layer and the cutter body.
- the longer outer surface of the outer body and its adjacent portions are brazed to preformed openings on the bit body.
- the ultra hard material layer portion opposite the brazed area is the portion that makes contact with the earth formations during drilling.
- the inventive cutter allows for an increased thickness of ultra hard material in the area making contact with the earth formation and which is subject to the impact loads while at the same time providing a relatively unchanged cutter body surface area which is brazed to the bit body.
- the delamination resistance of the ultra hard material layer as well as its wear resistance and fatigue strength are increased, without effecting the retention of the cutter within the bit.
- the volume of the ultra hard material may remain unchanged as compared to conventional cutting elements thereby not increasing the residual stretches that may be formed at the interface between the ultra hard material layer and the cutter body.
- the delamination resistance of the ultra hard material layer is not decreased due to the increase in the layer thickness making contact with the earth formations.
- One way to form cutter bodies having canted interfaces is to first form a cylindrical work piece having a diameter twice the diameter of the desired cutting element body and having a convex protrusion.
- a cylindrical cutting element body is then cut preferably using EDM from the work piece such that it is tangential to the work piece outer surface and to the work piece central axis.
- a second body may be cut which is also tangential to the work piece outer surface and which is tangential to the first cutting element body at the work piece central axis. Both bodies may be cut simultaneously.
- FIG. 1 is a perspective view of a conventional shear cutter.
- FIG. 2 is a perspective view of a drag bit with mounted shear cutters.
- FIG. 3 is a partial cross-sectional view of a shear cutter mounted on the bit body of FIG. 2 .
- FIG. 4 is a partial top view of a shear cutter mounted on the bit body of FIG. 2 .
- FIG. 5A is a cross-sectional view of a shear cutter having a canted interface on top of which is formed a cutting layer having a flat upper surface.
- FIG. 5B is a cross-sectional view of the shear cutter having a canted interface on top of which is formed a cutting layer having a dome-shaped upper surface.
- FIG. 6 is a partial cross-sectional view depicting the cutter of FIG. 5A mounted on a bit body.
- FIG. 7A is a cross-sectional view of a cutter having a body having a stepped canted interface.
- FIG. 7B is a cross-sectional view of a cutter having a body having a canted interface on which are formed steps having a canted upper surface.
- FIG. 7C is a cross-sectional view of a cutter having a body having a canted interface on which are formed steps having a curved upper surface.
- FIG. 7D is a cross-sectional view of a cutter having a body having a canted interface on which are formed steps having a non-uniform upper surface.
- FIG. 8A is a top view of a cutter body having a canted interface on which are formed zig-zag steps.
- FIG. 8B is a top view of a cutter body having a canted interface on which are formed curved steps curving toward the lower edge of the canted face.
- FIG. 8C is a top view of a cutter body having a canted interface on which are formed curved steps curving toward the higher edge of the canted face.
- FIG. 8D is a top view of a cutter body having a canted interface on which are formed linear chord-wise steps.
- FIG. 9A is a cross-sectional view of a cutter having a convex canted interface.
- FIG. 9B is a cross-sectional view of a cutter having a concave canted interface.
- FIG. 9C is a cross-sectional view of a cutter having a canted interface having two different radii of curvature.
- FIGS. 9D , 9 E and 9 F are cross-sectional views of cutters having non-uniform canted interfaces.
- FIG. 9G is a cross-sectional view of a cutting having a planar canted interface.
- FIG. 10A is a cross-sectional view of a cutter having a canted interface over part of which is formed an ultra hard material layer.
- FIGS. 10B , 10 C and 10 D are cross-sectional views of cutters each having only a portion of its interface canted and an ultra hard material layer formed over the canted portion.
- FIGS. 11A , 11 B and 11 C are top views of cutter partially canted interfaces.
- FIG. 12A is a cross-sectional view of a cutter having a canted interface and having a transition layer formed over the canted interface.
- FIG. 12B is a cross-sectional view of a cutter having a canted interface and having an encapsulated transition layer formed over the canted interface.
- FIG. 12C is a cross-sectional view of a cutter having a partial canted interface and an encapsulated transition layer formed over the partially canted interface.
- FIG. 13A is a cross-sectional view of a cylindrical work piece from which are cut forming cutter bodies having canted interfaces.
- FIG. 13B is a top view of the work piece shown in FIG. 10A depicting the cuts for forming two cutter bodies.
- the cutting elements or cutters of the present invention have a body 110 with a canted cutting face forming interface 112 ( FIG. 5A ). Stated differently, the interface is sloped. An ultra hard material layer 114 is formed over the canted interface.
- the upper surface 124 of the ultra hard material layer typically remains flat such that the thickness of the ultra hard material layer is minimum adjacent the highest point 128 on the interface and maximum adjacent the lowest point 126 on the canted face.
- the upper surface of the ultra hard material layer is dome-shaped ( FIG. 5B ).
- the radius of the dome-shaped surface is preferably relatively large such that the thickness of the ultra hard material layer is still maximum adjacent the lowest point 126 on the canted face.
- the thinnest portion 133 of the ultra hard material layer should be in the order of 10-20% of the thickness of the thickest portion 134 .
- the overall length of the cutter of the present invention remains the same as that of a conventional cutter allowing for mounting into existing bit bodies.
- the cutter body outer surface longest length 130 as measured from the highest point 128 on the interface is the same or longer than the length of conventional cutter bodies.
- the length of the cutter along the lowest point of the interface is less than or equal to the length of conventional cutter bodies.
- the cutters are mounted in the preformed openings 22 having a rear support wall 23 on the bit body 18 with the longest portion of the cutter outer surface 130 facing the rear support wall such that it becomes the surface of the cutter that is brazed to the bit body ( FIG. 6 ).
- the longest cutter surface 130 is within the cutter critical braze area. Since the longest outer surface of the cutter is the same or longer than the outer surface of conventional cutters, the cutter brazing critical area remains almost the same as the brazing critical area of conventional cutters. However, in comparison to conventional cutters with increased thickness ultra hard material layers, the overall brazing area on the cutter body is increased.
- the thickest portion 134 of the ultra hard material cutting layer is positioned opposite the brazing critical area so as to make contact with the earth formations 136 during drilling. Consequently, this thickest portion of the cutting layer is the portion that is subjected to the impact loads during drilling.
- the cutters of the present invention are optimized to have an ultra hard material cutting layer with an increased thickness at the location where the cutting layer impacts the earth formations while at the same time maintaining the cutters critical brazing surface area which is brazed to a bit body.
- the cutters of the present invention have an increased cutting layer delamination and wear resistance as well as fatigue life due to the increase in the thickness of the ultra hard material that is subject to impact loads, without reducing the cutter retention life when brazed to a bit body.
- the canted interface increases the offset of the interface from the severe impact loads 138 applied to the cutting layer during drilling. These loads are normal to the earth formation being drilled. As a result, the cant in the interface, reduces the portion of the impact load that is reacted in shear along the interface, thus reducing the shear stress along the interface. Consequently, the risk of cutting layer delamination is decreased.
- the canted interface allows for a distribution of the ultra hard material layer thickness without increasing the volume of the ultra hard material when compared to the volume of the ultra hard material in conventional cutters.
- the magnitude of the residual stresses formed on the interface between the cutter body and the ultra hard material layer do not increase by the increase in the thickness of the ultra hard material layer portion making contact with the earth formations.
- the canted interface is planar as shown ( FIG. 5A ).
- the canted interface is formed by a series of steps 140 along the interface ( FIG. 7A ). These steps ascend from a first point 126 to a second point 128 on the interface. These steps include an upper surface 141 and a riser 143 .
- the upper surface 141 of these steps may be flat ( FIG. 7A ) or canted (i.e., sloped) themselves ( FIG. 7B ).
- the upper surface of the steps may also be curved ( FIG. 7C ).
- the steps 140 may have upper surfaces 142 which are non-uniform ( FIG. 7D ).
- the steps themselves form a non-uniform face for interfacing with the cutting layer or with a transition layer.
- the steps may zig-zag across the interface ( FIG. 8A ), or they may curve towards the lower edge 126 of the canted interface ( FIG. 8B ) or toward the higher edge 128 of the canted interface ( FIG. 8C ) forming horseshoe shapes or may be linear ( FIG. 8D ) across the canted interface.
- a uniform interface is one that is flat or always curves in the same direction. This can be stated differently as an interface having the first derivative of slope always having the same sign.
- a conventional polycrystalline diamond-coated convex insert for a rock bit has a uniform interface since the center of curvature of all portions of the interface is in or through the carbide substrate.
- a non-uniform interface is defined as one where the first derivative of slope has changing sign.
- An example of a non-uniform interface is one that is wavy with alternating peaks and valleys.
- Other non-uniform interfaces may have dimples, bumps, ridges (straight or curved) or grooves, or other patterns of raised and lowered regions in relief.
- the steps on the canted interface provide for an increased surface area for bonding of the ultra hard material layer to the cutter body.
- the increased surface area also provides a reduction in the shear stresses reacted along the interface thereby enhancing the delamination resistance of the cutter.
- the steps tend to reduce the effects of the coefficient thermal expansion mismatch between the ultra hard material layer and the cutter body along the canted interface thereby decreasing the residual stresses that are formed along the canted face, and as a result increase the fatigue life and delamination resistance of the cutter.
- the interface 112 may curve along the cant in a convex ( FIG. 9A ) or concave ( FIG. 9B ) fashion or may be planar as shown in FIG. 9G .
- the canted face has a larger radius 144 at the higher portion of the canted surface and a smaller radius 145 at the lower portion of the canted face ( FIG. 9C ).
- the canted interface itself may be non-uniform in cross section for forming a non-uniform interface with a cutting layer ( FIGS. 9D and 9E ).
- the non-uniformities may follow a curved cant as shown for example in FIG. 9F . Again, the non-uniformities will reduce the residual stresses formed on the canted interface thereby enhancing the delamination resistance of the cutting layer.
- microcracking occurs on the ultra hard material layer immediately adjacent the support wall of the openings onto which the cutters are mounted. This microcracking eventually leads to the chipping of the ultra hard material layer. It is believed that the microcracking is caused by either or both of the following two reasons. First it is believed that the heat during brazing causes the brazing flux to chemically react with the portion of the ultra hard material layer adjacent the opening support wall causing “braze poisoning” of the ultra hard material layer. This braze poisoning weakens the ultra hard material layer leading to the formation of microcracks.
- the ultra hard material layer is placed only over a portion 171 of the canted interface so as not to extend to the support wall of the opening when mounted on a bit body ( FIG. 10A ).
- FIGS. 10B , 10 C and 10 D only a portion 170 of the interface is canted and the ultra hard material is placed only over the canted portion.
- the portion of the interface 172 that will be positioned adjacent to the rear support wall remains uncanted.
- about 1 ⁇ 3 of the diameter of cutter interface is uncanted (i.e., only about 2 ⁇ 3 of the diameter is canted) as for example shown in FIGS. 10A , 10 B and 10 C.
- the boundary between the canted and uncanted portions of the interface may be linear as shown in FIG. 11A or curved as shown, for example, in FIGS. 11B and 11C .
- the ultra hard material layer is preferably only placed over the canted portion of the interface, it does not extend to the support wall of the bit opening when the cutter is mounted on a bit body. As such, all of these embodiments ensure that the ultra hard material layer of the cutter remains away from the braze area, i.e., the rear support wall, and thus is not prone to braze poisoning. Moreover, the impact loads will not be reacted through the portion of the ultra hard material layer closest to the support walls.
- a single ( FIG. 11A ) or multiple transition layers 115 may be formed between the canted face and the ultra hard material cutting layer.
- the transition layer(s) should preferably be made from a material having properties which after processing are intermediate between the ultra hard material layer and the cutter body.
- the transition layer or layers may also be encapsulated as shown in FIGS. 12B and 12C .
- the interface surface of such cutters are symmetric about a plane.
- the ultra hard material layer thickness is at a maximum and at a minimum along this plane.
- While there are many ways to form the body of a cutter having a canted surface one method calls for the formation of a cylindrical work piece 150 having a dome shaped (or convex) upper protrusion 152 ( FIG. 13A ).
- the work piece should have a diameter 160 twice the diameter of the desired cutter body.
- EDM is used to cut the cutter body tangential to the central axis 156 of the cylindrical work piece and tangential to the outer surface 158 of the cylindrical work piece ( FIG. 13B ).
- two cutter bodies may be cut simultaneously which are tangential along the work piece central axis 156 and which have their central axes 162 along a diameter 160 of the work piece as shown in FIG. 13B .
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/217,706 US7703560B2 (en) | 1998-06-24 | 2008-07-07 | Cutting element with canted interface surface and bit body incorporating the same |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/103,824 US6202772B1 (en) | 1998-06-24 | 1998-06-24 | Cutting element with canted design for improved braze contact area |
US09/693,028 US6405814B1 (en) | 1998-06-24 | 2000-10-20 | Cutting element with canted design for improved braze contact area |
US10/079,293 US6991049B2 (en) | 1998-06-24 | 2002-02-20 | Cutting element |
US11/267,644 US7165636B2 (en) | 1998-06-24 | 2005-11-04 | Cutting element with canted interface surface and bit body incorporating the same |
US11/657,198 US7395885B2 (en) | 1998-06-24 | 2007-01-23 | Cutting element with canted interface surface and bit body incorporating the same |
US12/217,706 US7703560B2 (en) | 1998-06-24 | 2008-07-07 | Cutting element with canted interface surface and bit body incorporating the same |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/657,198 Continuation US7395885B2 (en) | 1998-06-24 | 2007-01-23 | Cutting element with canted interface surface and bit body incorporating the same |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090025985A1 US20090025985A1 (en) | 2009-01-29 |
US7703560B2 true US7703560B2 (en) | 2010-04-27 |
Family
ID=22297207
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/103,824 Expired - Lifetime US6202772B1 (en) | 1998-06-24 | 1998-06-24 | Cutting element with canted design for improved braze contact area |
US09/693,028 Expired - Lifetime US6405814B1 (en) | 1998-06-24 | 2000-10-20 | Cutting element with canted design for improved braze contact area |
US10/079,293 Expired - Fee Related US6991049B2 (en) | 1998-06-24 | 2002-02-20 | Cutting element |
US10/318,734 Abandoned US20030079918A1 (en) | 1998-06-24 | 2002-12-13 | Method for forming cutting elements |
US11/267,644 Expired - Fee Related US7165636B2 (en) | 1998-06-24 | 2005-11-04 | Cutting element with canted interface surface and bit body incorporating the same |
US11/657,198 Expired - Fee Related US7395885B2 (en) | 1998-06-24 | 2007-01-23 | Cutting element with canted interface surface and bit body incorporating the same |
US12/217,706 Expired - Fee Related US7703560B2 (en) | 1998-06-24 | 2008-07-07 | Cutting element with canted interface surface and bit body incorporating the same |
Family Applications Before (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/103,824 Expired - Lifetime US6202772B1 (en) | 1998-06-24 | 1998-06-24 | Cutting element with canted design for improved braze contact area |
US09/693,028 Expired - Lifetime US6405814B1 (en) | 1998-06-24 | 2000-10-20 | Cutting element with canted design for improved braze contact area |
US10/079,293 Expired - Fee Related US6991049B2 (en) | 1998-06-24 | 2002-02-20 | Cutting element |
US10/318,734 Abandoned US20030079918A1 (en) | 1998-06-24 | 2002-12-13 | Method for forming cutting elements |
US11/267,644 Expired - Fee Related US7165636B2 (en) | 1998-06-24 | 2005-11-04 | Cutting element with canted interface surface and bit body incorporating the same |
US11/657,198 Expired - Fee Related US7395885B2 (en) | 1998-06-24 | 2007-01-23 | Cutting element with canted interface surface and bit body incorporating the same |
Country Status (2)
Country | Link |
---|---|
US (7) | US6202772B1 (en) |
CA (1) | CA2276474C (en) |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6202772B1 (en) * | 1998-06-24 | 2001-03-20 | Smith International | Cutting element with canted design for improved braze contact area |
US6513608B2 (en) | 2001-02-09 | 2003-02-04 | Smith International, Inc. | Cutting elements with interface having multiple abutting depressions |
US6510910B2 (en) | 2001-02-09 | 2003-01-28 | Smith International, Inc. | Unplanar non-axisymmetric inserts |
US6604588B2 (en) | 2001-09-28 | 2003-08-12 | Smith International, Inc. | Gage trimmers and bit incorporating the same |
US6994615B2 (en) * | 2002-07-10 | 2006-02-07 | Diamond Innovations, Inc. | Cutting tools with two-slope profile |
US7287610B2 (en) * | 2004-09-29 | 2007-10-30 | Smith International, Inc. | Cutting elements and bits incorporating the same |
US8197936B2 (en) | 2005-01-27 | 2012-06-12 | Smith International, Inc. | Cutting structures |
US7493973B2 (en) | 2005-05-26 | 2009-02-24 | Smith International, Inc. | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance |
US8522897B2 (en) | 2005-11-21 | 2013-09-03 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US8360174B2 (en) | 2006-03-23 | 2013-01-29 | Schlumberger Technology Corporation | Lead the bit rotary steerable tool |
US7506698B2 (en) * | 2006-01-30 | 2009-03-24 | Smith International, Inc. | Cutting elements and bits incorporating the same |
USD620510S1 (en) * | 2006-03-23 | 2010-07-27 | Schlumberger Technology Corporation | Drill bit |
US9097074B2 (en) | 2006-09-21 | 2015-08-04 | Smith International, Inc. | Polycrystalline diamond composites |
US9017438B1 (en) | 2006-10-10 | 2015-04-28 | Us Synthetic Corporation | Polycrystalline diamond compact including a polycrystalline diamond table with a thermally-stable region having at least one low-carbon-solubility material and applications therefor |
US8236074B1 (en) | 2006-10-10 | 2012-08-07 | Us Synthetic Corporation | Superabrasive elements, methods of manufacturing, and drill bits including same |
US8080074B2 (en) | 2006-11-20 | 2011-12-20 | Us Synthetic Corporation | Polycrystalline diamond compacts, and related methods and applications |
US8034136B2 (en) | 2006-11-20 | 2011-10-11 | Us Synthetic Corporation | Methods of fabricating superabrasive articles |
CA2619547C (en) | 2007-02-06 | 2016-05-17 | Smith International, Inc. | Polycrystalline diamond constructions having improved thermal stability |
US7942219B2 (en) | 2007-03-21 | 2011-05-17 | Smith International, Inc. | Polycrystalline diamond constructions having improved thermal stability |
US7721826B2 (en) * | 2007-09-06 | 2010-05-25 | Schlumberger Technology Corporation | Downhole jack assembly sensor |
US9297211B2 (en) | 2007-12-17 | 2016-03-29 | Smith International, Inc. | Polycrystalline diamond construction with controlled gradient metal content |
US8999025B1 (en) | 2008-03-03 | 2015-04-07 | Us Synthetic Corporation | Methods of fabricating a polycrystalline diamond body with a sintering aid/infiltrant at least saturated with non-diamond carbon and resultant products such as compacts |
US8297382B2 (en) | 2008-10-03 | 2012-10-30 | Us Synthetic Corporation | Polycrystalline diamond compacts, method of fabricating same, and various applications |
US7972395B1 (en) | 2009-04-06 | 2011-07-05 | Us Synthetic Corporation | Superabrasive articles and methods for removing interstitial materials from superabrasive materials |
WO2010121116A2 (en) * | 2009-04-16 | 2010-10-21 | Smith International, Inc. | Fixed cutter bit for directional drilling applications |
US8951317B1 (en) | 2009-04-27 | 2015-02-10 | Us Synthetic Corporation | Superabrasive elements including ceramic coatings and methods of leaching catalysts from superabrasive elements |
US8087478B2 (en) * | 2009-06-05 | 2012-01-03 | Baker Hughes Incorporated | Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling |
US9352447B2 (en) * | 2009-09-08 | 2016-05-31 | Us Synthetic Corporation | Superabrasive elements and methods for processing and manufacturing the same using protective layers |
ZA201007262B (en) * | 2009-10-12 | 2018-11-28 | Smith International | Diamond bonded construction with reattached diamond body |
US10005672B2 (en) | 2010-04-14 | 2018-06-26 | Baker Hughes, A Ge Company, Llc | Method of forming particles comprising carbon and articles therefrom |
SA111320374B1 (en) | 2010-04-14 | 2015-08-10 | بيكر هوغيس انكوبوريتد | Method Of Forming Polycrystalline Diamond From Derivatized Nanodiamond |
US9205531B2 (en) | 2011-09-16 | 2015-12-08 | Baker Hughes Incorporated | Methods of fabricating polycrystalline diamond, and cutting elements and earth-boring tools comprising polycrystalline diamond |
EP2582905A2 (en) * | 2010-06-16 | 2013-04-24 | Element Six Abrasives S.A. | Superhard cutter |
CA2807369A1 (en) | 2010-08-13 | 2012-02-16 | Baker Hughes Incorporated | Cutting elements including nanoparticles in at least one portion thereof, earth-boring tools including such cutting elements, and related methods |
CN103261565B (en) * | 2010-11-03 | 2016-02-24 | 戴蒙得创新股份有限公司 | There is the cutting element structure of inclination ultra-hard layer |
US10309158B2 (en) | 2010-12-07 | 2019-06-04 | Us Synthetic Corporation | Method of partially infiltrating an at least partially leached polycrystalline diamond table and resultant polycrystalline diamond compacts |
US9027675B1 (en) | 2011-02-15 | 2015-05-12 | Us Synthetic Corporation | Polycrystalline diamond compact including a polycrystalline diamond table containing aluminum carbide therein and applications therefor |
EP2511229B1 (en) * | 2011-04-12 | 2017-03-08 | GFD Gesellschaft für Diamantprodukte mbH | Micromechanical component with reinforced flanks |
US9144886B1 (en) | 2011-08-15 | 2015-09-29 | Us Synthetic Corporation | Protective leaching cups, leaching trays, and methods for processing superabrasive elements using protective leaching cups and leaching trays |
RU2014114867A (en) | 2011-09-16 | 2015-10-27 | Бейкер Хьюз Инкорпорейтед | METHODS FOR PRODUCING POLYCRYSTALLINE DIAMOND, AND ALSO CUTTING ELEMENTS AND DRILLING TOOLS CONTAINING POLYCRYSTALLINE DIAMOND |
US9140072B2 (en) | 2013-02-28 | 2015-09-22 | Baker Hughes Incorporated | Cutting elements including non-planar interfaces, earth-boring tools including such cutting elements, and methods of forming cutting elements |
US9080385B2 (en) * | 2013-05-22 | 2015-07-14 | Us Synthetic Corporation | Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use |
US9550276B1 (en) | 2013-06-18 | 2017-01-24 | Us Synthetic Corporation | Leaching assemblies, systems, and methods for processing superabrasive elements |
US9534450B2 (en) | 2013-07-22 | 2017-01-03 | Baker Hughes Incorporated | Thermally stable polycrystalline compacts for reduced spalling, earth-boring tools including such compacts, and related methods |
US9789587B1 (en) | 2013-12-16 | 2017-10-17 | Us Synthetic Corporation | Leaching assemblies, systems, and methods for processing superabrasive elements |
US10807913B1 (en) | 2014-02-11 | 2020-10-20 | Us Synthetic Corporation | Leached superabrasive elements and leaching systems methods and assemblies for processing superabrasive elements |
US9845642B2 (en) | 2014-03-17 | 2017-12-19 | Baker Hughes Incorporated | Cutting elements having non-planar cutting faces with selectively leached regions, earth-boring tools including such cutting elements, and related methods |
US9605488B2 (en) | 2014-04-08 | 2017-03-28 | Baker Hughes Incorporated | Cutting elements including undulating boundaries between catalyst-containing and catalyst-free regions of polycrystalline superabrasive materials and related earth-boring tools and methods |
US9714545B2 (en) | 2014-04-08 | 2017-07-25 | Baker Hughes Incorporated | Cutting elements having a non-uniform annulus leach depth, earth-boring tools including such cutting elements, and related methods |
US9863189B2 (en) | 2014-07-11 | 2018-01-09 | Baker Hughes Incorporated | Cutting elements comprising partially leached polycrystalline material, tools comprising such cutting elements, and methods of forming wellbores using such cutting elements |
US9908215B1 (en) | 2014-08-12 | 2018-03-06 | Us Synthetic Corporation | Systems, methods and assemblies for processing superabrasive materials |
US11766761B1 (en) | 2014-10-10 | 2023-09-26 | Us Synthetic Corporation | Group II metal salts in electrolytic leaching of superabrasive materials |
US10011000B1 (en) | 2014-10-10 | 2018-07-03 | Us Synthetic Corporation | Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials |
US10723626B1 (en) | 2015-05-31 | 2020-07-28 | Us Synthetic Corporation | Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials |
CN108291428A (en) * | 2015-11-30 | 2018-07-17 | 史密斯国际有限公司 | Spoon shape diamond table top on on-plane surface cutting element |
US11814904B2 (en) | 2015-11-30 | 2023-11-14 | Schlumberger Technology Corporation | Cutting structure of cutting elements for downhole cutting tools |
CN107046811A (en) * | 2015-12-03 | 2017-08-15 | 华为技术有限公司 | One introduces a collection storage device sends the clone file of source file and source file to the method, source storage device and backup storage device of backup storage device |
US10900291B2 (en) | 2017-09-18 | 2021-01-26 | Us Synthetic Corporation | Polycrystalline diamond elements and systems and methods for fabricating the same |
Citations (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4629373A (en) * | 1983-06-22 | 1986-12-16 | Megadiamond Industries, Inc. | Polycrystalline diamond body with enhanced surface irregularities |
US5217081A (en) * | 1990-06-15 | 1993-06-08 | Sandvik Ab | Tools for cutting rock drilling |
US5332051A (en) * | 1991-10-09 | 1994-07-26 | Smith International, Inc. | Optimized PDC cutting shape |
US5351772A (en) * | 1993-02-10 | 1994-10-04 | Baker Hughes, Incorporated | Polycrystalline diamond cutting element |
US5435403A (en) * | 1993-12-09 | 1995-07-25 | Baker Hughes Incorporated | Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits |
US5484330A (en) * | 1993-07-21 | 1996-01-16 | General Electric Company | Abrasive tool insert |
US5486137A (en) * | 1993-07-21 | 1996-01-23 | General Electric Company | Abrasive tool insert |
US5494477A (en) * | 1993-08-11 | 1996-02-27 | General Electric Company | Abrasive tool insert |
US5564511A (en) * | 1995-05-15 | 1996-10-15 | Frushour; Robert H. | Composite polycrystalline compact with improved fracture and delamination resistance |
US5590727A (en) * | 1994-06-16 | 1997-01-07 | Tank; Klaus | Tool component |
US5590728A (en) * | 1993-11-10 | 1997-01-07 | Camco Drilling Group Limited | Elements faced with superhard material |
US5605199A (en) * | 1994-06-24 | 1997-02-25 | Camco Drilling Group Limited | Elements faced with super hard material |
US5617928A (en) * | 1994-06-18 | 1997-04-08 | Camco Drilling Group Limited | Elements faced with superhard material |
US5709279A (en) * | 1995-05-18 | 1998-01-20 | Dennis; Mahlon Denton | Drill bit insert with sinusoidal interface |
US5711702A (en) * | 1996-08-27 | 1998-01-27 | Tempo Technology Corporation | Curve cutter with non-planar interface |
US5816347A (en) * | 1996-06-07 | 1998-10-06 | Dennis Tool Company | PDC clad drill bit insert |
US5881830A (en) * | 1997-02-14 | 1999-03-16 | Baker Hughes Incorporated | Superabrasive drill bit cutting element with buttress-supported planar chamfer |
US5887580A (en) * | 1998-03-25 | 1999-03-30 | Smith International, Inc. | Cutting element with interlocking feature |
US5971087A (en) * | 1998-05-20 | 1999-10-26 | Baker Hughes Incorporated | Reduced residual tensile stress superabrasive cutters for earth boring and drill bits so equipped |
US5979577A (en) * | 1996-05-31 | 1999-11-09 | Diamond Products International, Inc. | Stabilizing drill bit with improved cutting elements |
US6000483A (en) * | 1996-02-15 | 1999-12-14 | Baker Hughes Incorporated | Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped |
US6011232A (en) * | 1997-07-26 | 2000-01-04 | Camco International (Uk) Limited | Manufacture of elements faced with superhard material |
US6009963A (en) * | 1997-01-14 | 2000-01-04 | Baker Hughes Incorporated | Superabrasive cutting element with enhanced stiffness, thermal conductivity and cutting efficiency |
US6021859A (en) * | 1993-12-09 | 2000-02-08 | Baker Hughes Incorporated | Stress related placement of engineered superabrasive cutting elements on rotary drag bits |
US6065554A (en) * | 1996-10-11 | 2000-05-23 | Camco Drilling Group Limited | Preform cutting elements for rotary drill bits |
US6068071A (en) * | 1996-05-23 | 2000-05-30 | U.S. Synthetic Corporation | Cutter with polycrystalline diamond layer and conic section profile |
US6082474A (en) * | 1997-07-26 | 2000-07-04 | Camco International Limited | Elements faced with superhard material |
US6193001B1 (en) * | 1998-03-25 | 2001-02-27 | Smith International, Inc. | Method for forming a non-uniform interface adjacent ultra hard material |
US6202771B1 (en) * | 1997-09-23 | 2001-03-20 | Baker Hughes Incorporated | Cutting element with controlled superabrasive contact area, drill bits so equipped |
US6991049B2 (en) * | 1998-06-24 | 2006-01-31 | Smith International, Inc. | Cutting element |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2815297C2 (en) * | 1978-04-08 | 1983-01-13 | Dürkoppwerke GmbH, 4800 Bielefeld | Controlled thread clamp of a sewing machine, arranged in the area between the thread lever and the eye of the needle and acting on at least one needle thread |
JP2700557B2 (en) * | 1988-05-27 | 1998-01-21 | 蛇の目ミシン工業株式会社 | Automatic thread tension sewing machine |
JP2885530B2 (en) * | 1991-04-12 | 1999-04-26 | 株式会社鈴木製作所 | Overlock sewing machine conversion device for overlock sewing machine |
DE69528595T2 (en) * | 1995-03-29 | 2003-06-18 | Jaguar Co., Ltd. | Overlock machine |
JPH09285666A (en) * | 1996-04-19 | 1997-11-04 | Pegasus Sewing Mach Mfg Co Ltd | Thread control device of multi-thread chain stitch sewing machine |
US6012405A (en) * | 1998-05-08 | 2000-01-11 | Mcet, Llc | Method and apparatus for automatic adjustment of thread tension |
-
1998
- 1998-06-24 US US09/103,824 patent/US6202772B1/en not_active Expired - Lifetime
-
1999
- 1999-06-25 CA CA002276474A patent/CA2276474C/en not_active Expired - Fee Related
-
2000
- 2000-10-20 US US09/693,028 patent/US6405814B1/en not_active Expired - Lifetime
-
2002
- 2002-02-20 US US10/079,293 patent/US6991049B2/en not_active Expired - Fee Related
- 2002-12-13 US US10/318,734 patent/US20030079918A1/en not_active Abandoned
-
2005
- 2005-11-04 US US11/267,644 patent/US7165636B2/en not_active Expired - Fee Related
-
2007
- 2007-01-23 US US11/657,198 patent/US7395885B2/en not_active Expired - Fee Related
-
2008
- 2008-07-07 US US12/217,706 patent/US7703560B2/en not_active Expired - Fee Related
Patent Citations (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4629373A (en) * | 1983-06-22 | 1986-12-16 | Megadiamond Industries, Inc. | Polycrystalline diamond body with enhanced surface irregularities |
US5217081A (en) * | 1990-06-15 | 1993-06-08 | Sandvik Ab | Tools for cutting rock drilling |
US5332051A (en) * | 1991-10-09 | 1994-07-26 | Smith International, Inc. | Optimized PDC cutting shape |
US5351772A (en) * | 1993-02-10 | 1994-10-04 | Baker Hughes, Incorporated | Polycrystalline diamond cutting element |
US5486137A (en) * | 1993-07-21 | 1996-01-23 | General Electric Company | Abrasive tool insert |
US5484330A (en) * | 1993-07-21 | 1996-01-16 | General Electric Company | Abrasive tool insert |
US5494477A (en) * | 1993-08-11 | 1996-02-27 | General Electric Company | Abrasive tool insert |
US5590728A (en) * | 1993-11-10 | 1997-01-07 | Camco Drilling Group Limited | Elements faced with superhard material |
US6021859A (en) * | 1993-12-09 | 2000-02-08 | Baker Hughes Incorporated | Stress related placement of engineered superabrasive cutting elements on rotary drag bits |
US5435403A (en) * | 1993-12-09 | 1995-07-25 | Baker Hughes Incorporated | Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits |
US5590727A (en) * | 1994-06-16 | 1997-01-07 | Tank; Klaus | Tool component |
US5617928A (en) * | 1994-06-18 | 1997-04-08 | Camco Drilling Group Limited | Elements faced with superhard material |
US5622233A (en) * | 1994-06-18 | 1997-04-22 | Camco Drilling Group Limited, Of Hycalog | Elements faced with superhard materials |
US5605199A (en) * | 1994-06-24 | 1997-02-25 | Camco Drilling Group Limited | Elements faced with super hard material |
US5564511A (en) * | 1995-05-15 | 1996-10-15 | Frushour; Robert H. | Composite polycrystalline compact with improved fracture and delamination resistance |
US5709279A (en) * | 1995-05-18 | 1998-01-20 | Dennis; Mahlon Denton | Drill bit insert with sinusoidal interface |
US6000483A (en) * | 1996-02-15 | 1999-12-14 | Baker Hughes Incorporated | Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped |
US6068071A (en) * | 1996-05-23 | 2000-05-30 | U.S. Synthetic Corporation | Cutter with polycrystalline diamond layer and conic section profile |
US5979577A (en) * | 1996-05-31 | 1999-11-09 | Diamond Products International, Inc. | Stabilizing drill bit with improved cutting elements |
US5816347A (en) * | 1996-06-07 | 1998-10-06 | Dennis Tool Company | PDC clad drill bit insert |
US5711702A (en) * | 1996-08-27 | 1998-01-27 | Tempo Technology Corporation | Curve cutter with non-planar interface |
US6065554A (en) * | 1996-10-11 | 2000-05-23 | Camco Drilling Group Limited | Preform cutting elements for rotary drill bits |
US6009963A (en) * | 1997-01-14 | 2000-01-04 | Baker Hughes Incorporated | Superabrasive cutting element with enhanced stiffness, thermal conductivity and cutting efficiency |
US5881830A (en) * | 1997-02-14 | 1999-03-16 | Baker Hughes Incorporated | Superabrasive drill bit cutting element with buttress-supported planar chamfer |
US6082474A (en) * | 1997-07-26 | 2000-07-04 | Camco International Limited | Elements faced with superhard material |
US6011232A (en) * | 1997-07-26 | 2000-01-04 | Camco International (Uk) Limited | Manufacture of elements faced with superhard material |
US6202771B1 (en) * | 1997-09-23 | 2001-03-20 | Baker Hughes Incorporated | Cutting element with controlled superabrasive contact area, drill bits so equipped |
US5887580A (en) * | 1998-03-25 | 1999-03-30 | Smith International, Inc. | Cutting element with interlocking feature |
US6193001B1 (en) * | 1998-03-25 | 2001-02-27 | Smith International, Inc. | Method for forming a non-uniform interface adjacent ultra hard material |
US5971087A (en) * | 1998-05-20 | 1999-10-26 | Baker Hughes Incorporated | Reduced residual tensile stress superabrasive cutters for earth boring and drill bits so equipped |
US6991049B2 (en) * | 1998-06-24 | 2006-01-31 | Smith International, Inc. | Cutting element |
US7165636B2 (en) * | 1998-06-24 | 2007-01-23 | Smith International, Inc. | Cutting element with canted interface surface and bit body incorporating the same |
US7395885B2 (en) * | 1998-06-24 | 2008-07-08 | Smith International, Inc. | Cutting element with canted interface surface and bit body incorporating the same |
Also Published As
Publication number | Publication date |
---|---|
US20060054363A1 (en) | 2006-03-16 |
US6405814B1 (en) | 2002-06-18 |
US20030079918A1 (en) | 2003-05-01 |
US6202772B1 (en) | 2001-03-20 |
US20070119631A1 (en) | 2007-05-31 |
US7395885B2 (en) | 2008-07-08 |
CA2276474A1 (en) | 1999-12-24 |
US7165636B2 (en) | 2007-01-23 |
US6991049B2 (en) | 2006-01-31 |
US20090025985A1 (en) | 2009-01-29 |
CA2276474C (en) | 2006-09-05 |
US20020079140A1 (en) | 2002-06-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7703560B2 (en) | Cutting element with canted interface surface and bit body incorporating the same | |
USRE48524E1 (en) | Cutting elements having cutting edges with continuous varying radii and bits incorporating the same | |
US5617928A (en) | Elements faced with superhard material | |
US6443248B2 (en) | Drill bit inserts with interruption in gradient of properties | |
US6272753B2 (en) | Multi-layer, multi-grade multiple cutting surface PDC cutter | |
CA1237121A (en) | Rotary drill bits and cutting elements for such bits | |
CN108884706B (en) | Multi-ridge cutting element | |
US6861137B2 (en) | High volume density polycrystalline diamond with working surfaces depleted of catalyzing material | |
US6601662B2 (en) | Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength | |
US6408959B2 (en) | Polycrystalline diamond compact cutter having a stress mitigating hoop at the periphery | |
EP0741228A2 (en) | Improvement in or relating to cutting element for rotary drill bits | |
US5888619A (en) | Elements faced with superhard material | |
US6244365B1 (en) | Unplanar non-axisymmetric inserts | |
CA2180312C (en) | Tool component | |
US6077591A (en) | Elements faced with superhard material | |
EP1251239B1 (en) | Drill bit having large diameter pdc cutters | |
US7461709B2 (en) | Multiple diameter cutting elements and bits incorporating the same | |
GB2300437A (en) | Cutting elements for rotary drill bits | |
EP0878602A2 (en) | Cutting elements faced with superhard material | |
EP0936012A1 (en) | Elements faced with superhard material | |
GB2375127A (en) | Cutting element for rock bit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SMITH INTERNATIONAL, INC., TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EYRE, RONALD K.;KESHAVAN, MADAPUSI K.;TRUAX, DAVID;REEL/FRAME:021337/0115;SIGNING DATES FROM 19980616 TO 19980619 Owner name: SMITH INTERNATIONAL, INC.,TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EYRE, RONALD K.;KESHAVAN, MADAPUSI K.;TRUAX, DAVID;SIGNING DATES FROM 19980616 TO 19980619;REEL/FRAME:021337/0115 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.) |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.) |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20180427 |